baber/WOPTO huggingface dataset:
Patent CA-2052429-A1 (CA)
Title: Elastomeric swashplate configuration for helicopters
Inventor: BYRNES FRANCIS E
IPC: B64C27/605
Filed: 1991-09-26
Abstract: Abstract of the Disclosure Elastomeric Swashplate Configuration for Helicopters A swashplate configuration for a helicopter which eliminates the need for scissors linkages through the use of a centering member capable of tilt and axial translation while driving torque to the rotating swashplate member through the use of elastomeric bearing assemblies each consisting of a first stack of flat laminates and a second stack of spherical laminates.
Patent CA-2053446-A1 (CA)
IPC: E03F5/22
Filed: 1991-10-15
Abstract: Disclosed is a process for removing contaminants from a contaminated area of the ground having a vadose zone and a water table which comprises providing a borehole in the contaminated area; placing in the borehole a perforated riser pipe inside of which is situated a vacuum extraction pipe with an opening situated near, at, or at any point below the water table within the perforated riser pipe; while introducing a gas into the riser pipe, applying a vacuum to the vacuum extraction pipe to draw gases and liquid from the soil into the perforated riser pipe and from the riser pipe into the vacuum extraction pipe and transport both the gases and the liquid to the surface as a common stream; forming from the common stream a stream which is primarily liquid and a stream which is primarily gaseous; and separately treating the separated liquid and gas streams. Also disclosed is an apparatus for carrying out the process.
Patent CA-2055518-A1 (CA)
IPC: E05D7/085
Filed: 1991-11-14
Abstract: A double-pivot door hinge is disclosed that is particularly suited  for  household  appliances  such  as refrigerators or microwave ovens.  The hinge arrangement allows the appliance door to be opened a full 180 degrees from its closed position without coming into contact with a flush mounted wall such as an abutting kitchen cabinet.  The hinge has a first pivot pin and a stop arrangement which allows a door to be swung outwardly until a 90-degree posi-tion is reached whereby the stop arrangement is engaged. Upon further outward movement,  the assembly shifts to a second hinge pin until a 180-degree position is reached.  The movement from the 90-degree position to a 180-degree position requires the overcoming  of a spring  force of the hinge arrangement.  In another embodiment, the hinge has a further stop arrangement that prevents the door from opening beyond the 180-degree position.
Patent CA-2055903-A1 (CA)
Title: Advanced epoxy compositions, curable compositions and cured products
Inventor: TREYBIG DUANE S
IPC: C08G59/14
Filed: 1991-11-20
Abstract: ABSTRACT     Compositions are prepared by the reaction of (A) an advanced composition resulting from reacting (1) at least one of (a) at least one epoxidized triglyceride of a fatty acid, or (b) at least one epoxidized fatty acid having an average of more than one unsaturated group per molecule or (c) at least one diepoxyalkane, or (d) any combination of any two or more of (a), (b) or (c), or (e) a combination of any one or more of (a), (b) or (c) and (f) a diglycidyl ether of a dihydric phenol; with (2) a dihydric phenol; (B) optionally a monohydric phenol; (C) a phosphorus-containing compound; and (D) optionally a base.  These compositions can be cured with curing agents which react with aliphatic hydroxyl groups.     38,788-F
Patent CA-2057171-A1 (CA)
Inventor: LIN YNG-LANG
IPC: B60C17/04
Filed: 1991-12-06
Abstract: ABSTRACT      The safety vehicle  wheel  comprising  a combined  rim formed in a seperable way  by  connecting  a  plate  with  a flange as well as a ring with a flange and  a  inner  flange on two sides respectively, a  tire  and  a  free  air-pumped spare wheel connected between the plate and  the  ring.  The outer circumference of the spare wheel is kept at  a  proper distance with the circumference  inside  of  the  tire.  The safety vehicle wheel can immediately re-support a vehicle to be driven continuously and especially prevent  an  accident when a blowout or flat of tire is occured.
Patent CA-2059129-A1 (CA)
Inventor: SULLIVAN SEAN M
IPC: B01J13/02
Filed: 1990-06-20
Abstract: A process for the encapsulation of oligonucleotides in liposomes includes the suspending of liposomes containing a diva-lent cation in a solution containing an oligonucleotide and having an osmolarity of less than that of the internal aqueous phase.
Patent CA-2061560-A1 (CA)
Inventor: CORNWELL JOHN H
IPC: B65D83/14
Filed: 1992-02-20
Abstract: A histological tissue freezing process is provided. The process includes spraying a chemical,  tetrafluoro-ethane, onto a portion of a histological tissue specimen before sectioning thereof.  The use of tetrafluoroethane has the advantages of not causing ozone depletion, reduced global warming potential and producing a colder spray.  A spray can for spraying the chemical is also provided.
Patent CA-2062475-A1 (CA)
Title: Process for the delignification of cellulose containing raw materials
Inventor: NIMZ HORST
IPC: D21C9/10
Filed: 1992-03-06
Abstract: Abstract In the disclosed two stage process for the delignification of cellulose containing raw materials, the extraction is carried out with aqueous acetic acid at a temperature of 140 to 230°C and a pressure of 3 to 30 bar with a subsequent extraction or washing.  The obtained acetic acid wet cellulose is subsequently treated with an ozone containing gas. The use of halogenous additives or bleaching agents is no longer required.  The process provides for a residual lignin content of less than 1% per weight, even if the yielded cellulose was extracted from coniferous wood which is hard to delignify,
Patent CA-2064560-A1 (CA)
Title: Ion flotation with non-ionic reagents
Inventor: ENGEL MALCOLM D
IPC: C22B3/44
Filed: 1990-08-03
Abstract: ABSTRACT OF THE DISCLOSURE           A method for ion flotation in which the flotation reagent employed is a compound of general formula, wherein R1 is a C10-C18 alkyl group, Y is O, S, NH, (CH2)n or (CHR)n where R is a lower alkyl group and n is 1 to 6.  X is a halogen atom, and P and Q are the same or different groups and each is hydrogen or a lower alkyl, lower alkenyl, aryl or substituted aryl group.  The method is especially suited for the extraction of gold using ion flotation.
Patent CA-2065968-A1 (CA)
Title: Hamper for disposable waste bag
Inventor: JOHAN TOM
IPC: B62B3/10
Filed: 1992-04-14
Abstract: ABSTRACT OF THE DISCLOSURE       A hamper constructed to have an upper rim over which a disposable waste bag may be suspended in an open condition, and a hinged frame which serves to clamp the upper end of the bag to the rim. The bag may then be conveniently loaded. A hinged lid is also provided for closing the hamper when not in use.  The rim is supported on upright posts which, in turn, are mounted on a base supported on casters.
Patent CA-2066849-A1 (CA)
Title: Turbine
Inventor: FREY MAX
IPC: F03B11/06
Filed: 1992-04-22
Abstract: The turbine has a rotor which, in turn, carries a flywheel portion, the two parts being integral.  Bearings press-fit on the rotor are journalled onto upstream and downstream stators in the turbine.  Lubricating water is delivered to the bearing surfaces between the rotor and the stators.
Patent CA-2069761-A1 (CA)
Title: Methode d'obtention de mousse plastique a reticulations croisees
Inventor: DAHL ROGER
IPC: C08J9/02
Filed: 1990-11-29
Abstract: Méthode de production d'un polymère expansé réticulé renfermant du  chlorure de vinyle. On produit un copolymère en utilisant dans la polymérisation du chlorure de vinyle et un monomère contenant du glycidyle (époxy) et éventuellement un autre monomère. Un agent d'expansion est ajouté au polymère, et les produits de décomposition de l'agent d'expansion ou les produits de décomposition des produits de la réaction de l'agent d'expansion réagissent chimiquement avec les groupes époxy ou leurs produits de réaction. La réticulation se produit quand l'agent d'expansion ou le produit de réaction de l'agent d'expansion est décomposé. On utilise préférablement une composition monomérique avec 30-99,95 % de chlorure de vinyle. Le monomère renfermant le glycidyle est préférablement un composé d'acrylate, de méthacrylate ou d'acrylate de butyle ajouté dans une proportion de 0,05-30 %. On peut utiliser des agents d'expansion qui ont pour produit de décomposition par exemple l'ammoniac, l'acide cyanique ou l'acide isocyanique. L'azodicarbonamide, modifié ou non, constitue un bon agent d'expansion.
Patent CA-2070520-A1 (CA)
Inventor: CLAY TYMEN
IPC: B23B31/163
Filed: 1992-06-04
Abstract: A scroll chuck for holding a workpiece in a lathe includes a jaw holder having a front side and a rear side,  radially extending slots in the front side and means for attaching the holder to the lathe for turning about a central axis.  Two or more jaw devices are mounted in the slots and are radially movable therein.  A scroll member is rotatably mounted on the holder and has a spiral-shaped rib formed on a front surface thereof.  This rib extends along recesses formed on the jaw devices whereby rotation of the scroll member causes the jaw devices to move in the radial direction.   A pin member is arranged on  one  of  the  jaw devices  and extends  from a rearwardly facing surface of the device and into an elongate recess formed in the holder.  This pin member prevents the jaw device from accidentally disengaging from the holder.
Patent CA-2071999-A1 (CA)
Inventor: URANO YOSHIAKI
IPC: C07C229/08
Filed: 1991-10-21
Abstract: There is provided a novel process for producing aminocarboxylic acid salts useful as starting materials of agricultural chemicals and medicines, chelating agents, food additives, and so on.  This process is characterized in that when producing an aminocarboxylic acid salt by an oxidative dehydrogenation reaction of an amino alcohol in the presence of an alkali metal hydroxide and/or an alkaline earth metal hydroxide, a copper-containing catalyst and water, the reaction is performed by adding an aluminum metal and/or an aluminum compound (e.g., sodium aluminate and aluminum hydroxide) to the reaction system.
Patent CA-2074258-A1 (CA)
Inventor: ALAVAI KAMAL
IPC: B03C1/00
Filed: 1990-11-21
Abstract: Electronic scrap goods, for example, electronic components, cables etc., are successively and alternately mechanically crushed, magnetically separated and mechanically-physically separated, for example, by means of electrostatic separators.  The dust produced during crushing is pneumatically collected and filtered out.  The non-metal fraction as well as the magnetic and non-magnetic fraction are produced separately as granules and dust.  The metal fractions are suitable for subsequent pyrolysis-free, wet chemical and/or electrolytic separation.  The non-metallic fraction is disposable.  The method is distinguished by low energy consumption and high environmental compatibility.
Patent CA-2075020-A1 (CA)
Title: Method for preparing semiconductor member
Inventor: ICHIKAWA TAKESHI
IPC: H01L21/20
Filed: 1992-07-30
Abstract: A method for preparing a semiconductor member comprising steps of: making a silicon substrate porous; forming a non-porous silicon monocrystalline layer on the porous silicon substrate at a first temperature; bonding a surface of the non-porous silicon monocrystalline layer on to another substrate having an insulating material on the surface thereof; etching the porous silicon by removing the porous silicon of the bonded substrate by chemical etching; and forming a monocrystalline silicon layer on the non-porous silicon monocrystalline layer by epitaxial growth at a second temperature higher than the first temperature.
Patent CA-2075043-A1 (CA)
Title: Vtol aircraft
Inventor: MOLLER PAUL S
IPC: B64C29/00
Filed: 1991-01-11
Abstract: A VTOL aircraft including a fuselage (10) with four nacelles (12, 14, 16, and 18), three vertical stabilizers (20, 22, and 24) and a horizontal stabilizer (26) attached to the fuselage (10). The fuselage (10) and the nacelles (12, 14, 16, and 18) are lifting bodies that are configured to jointly form an aerodynamic lifting body which cooperates with the horizontal stabilizer (26) to provide aerodynamic lift to the aircraft in forward flight. Each nacelle contains two rotary engines (60 and 62) directly driving corresponding fans (64 and 66) which face each other and operate in counter-rotating directions. Each nacelle (12, 14, 16, and 18) also contains a system of vanes (82) located at the rear opening (58) thereof, and devices for extending and retracting the vanes (82). A triple redundant computerized flight control system maintains the stability of the aircraft as it transitions from one flight regime to another as well as in flight.
Patent CA-2075984-A1 (CA)
Title: Quality check for a mobile cellular radio system
Inventor: KALLIN HARALD
IPC: H04W72/08
Filed: 1991-12-17
Abstract: ABSTRACT OF THE DISCLOSURE      In a mobile cellular radio system, when setting up a new call or when handing over an existing call to a new traffic channel, it is necessary to avoid disturbances on the new traffic channel which can cause poor transmission quality. In order to avoid unnecessary disturbances on the new traffic channel, the signal strength of the mobile station requesting a new channel is measured.  In addition, the disturbance levels on the available traffic channels are also measured and then compared with the signal strength of the mobile station requesting a channel.  Based on the comparison, a traffic channel is assigned to the mobile station so that the disturbance level on the traffic channel is at least less than or equal to a minimum threshold value.
Patent CA-2076304-A1 (CA)
Title: Method for decreasing the allergenicity of psyllium seed husk
Inventor: SIMMONS CURTIS T
IPC: A23L29/238
Filed: 1992-08-18
Abstract: ABSTRACT OF THE DISCLOSURE           A method of reducing the allergenicity of psyllium seed husks.  The method comprises selecting that portion of a quantity of coarsely ground psyllium seeds having a particle size greater than a predetermined particle size in order to selectively reduce the allergenicity of the psyllium seed husks.   Preferably, the coarsely ground psyllium seeds are separated based on particle size by passing coarsely ground psyllium seed husks through at least one sizing means  or screen,  and preferably through at  least two vertically aligned sizing means of decreasing opening size.
Patent CA-2078339-A1 (CA)
Title: Image generator
Inventor: OLIVE GRAHAM JOHN
IPC: G09B9/34
Filed: 1991-04-15
Abstract: ABSTRACT OF THE DISCLOSURE      Elliptical features are described in an image generator database in terms of an origin and major and minor axes defined by reference to a world or model space coordinate system.  Image data is assembled for display by transforming the database contents into screen space and assessing for each of an array of sampling points distributed across screen space which features are to contribute to the portion of a final image in which the sampling point is located.  In the case of elliptical features, data is transformed into eyepoint space and each sampling point is projected into eyepoint space to determine the point of intersection between a line drawn through the sampling point from the eyepoint and a plans defined by the axes.  The coordinates of the intersection point in a coordinate system defined by the origin and axes, are used to determine whether or not the feature contributes to the sampling point.
Patent CA-2083147-A1 (CA)
Title: Multimedia high speed network
Inventor: LINDE YOSEPH
IPC: H04B10/00
Filed: 1991-05-28
Abstract: A system is provided implementing an extremely high speed link allowing selection of either twisted pair (or like media) and fiber media in a single local area network to provide a high speed multimedia local area network. A high speed transmission link for twisted pair, coaxial cable media or the like is provided including a transmitter with a conversion device for receiving fiber optic data interface signals intended to drive a fiber optic data interface and for converting said fiber optic data interface signals into high speed transmission link signals of a form suitable to drive a shielded twisted pair medium. A receiver is provided including reconversion means for regenerating the signal received from the shielded twisted pair medium back to an adequate signal level. The transmitter conversion means includes a buffer cooperating with an equalizer and a filter for forming the high speed transmission link signal. The equalizer provides frequency domain compensation for the characteristics of the shielded twisted pair medium. The filter rejects signals outside a band of data signaling.  The receiver reconversion means includes a filter connected to said twisted pair medium to reject signals outside a band of data signaling, a buffer for regenerating the signal received from the shielded twisted pair and filtration by said filter and regenerating the signal back to an adequate signal level and a low frequency restoration circuit which employs a decision feedback technique for the compensation of the media coupling circuit's low frequency response.
Patent CA-2084854-A1 (CA)
Title: Process for the preparation of alkali metal acetates
Inventor: BETTERMANN GERHARD
IPC: C09K3/18
Filed: 1992-12-08
Abstract: Process for the preparation of alkali metal acetates Abstract To prepare a corrosion-inhibitlng liquid de-icing agent based on alkali metal acetates, 30 to 50 percent strength by weight alkali metal hydroxide solution is introduced into a reaction container provided with a cooling device and a mixing device, and 85 to 100% strength acetic acid is metered into the reaction container until the ratio by weight of acetic acid to alkali metal hydroxide solution therein (0.30 to 0.45) : 1. A portion of this solution is transferred from the reaction container to a stirred dissolving tank and 0.03 to 1% by weight, relative to the batch,  of  benzotriazole  and/or  tolyltriazole  and/or imidazole is dissolved therein. The resulting solution containing azole is introduced into the reaction con-tainer along with 0.01 to 0.2% by weight of phosphoric acid, relative to the batch. Acetic acid continues to be metered into the reaction container until the density of the  solution  in  the  reaction  container  is  1.07  to 1.39 g/cm3 at  20°C.  Small  amounts  of  alkali  metal hydroxide solution or acetic acid are then introduced into the reaction container until the pH of the solution therein is 9.2 to 9.8. Finally, this solution is with-drawn from the reaction container as a liquid de-icing agent.
Patent CA-2085002-A1 (CA)
Title: Treatment of organ transplantation rejection
Inventor: ACKERMAN NEIL R
IPC: A61K45/00
Filed: 1991-06-05
Abstract: 4-Quinoline-carboxylic acid derivatives, such as 2-(2'-fluoro-1,1'-biphenyl-4-yl)-6-fluoro-3-methyl-4-quinoline carboxylic acid, in combination with other immunosuppressive agents are useful for the treatment and/or prevention of transplantation rejection, graft vs. host disease, autoimmune diseases, and chronic inflammatory disease.
Patent CA-2085532-A1 (CA)
Title: Thiazoles
Inventor: MISSBACH MARTIN
IPC: C07D277/54
Filed: 1992-12-16
Abstract: Novel thiazoles Abstract Novel thiazoles of formula I                                     (I) wherein R1 and R4 are lower alkyl, lower alk-2-en-1-yl or lower alk-2-yn-1-yl, R2 and R3 are each independently of the other hydrogen or lower alkyl or together form lower alkylidene, and R5 and R6 are each hydrogen or lower alkyl or together form oxo, and R5' and R6' have the same definitions as R5 and R6, with the proviso that at least one of the substituent pairs R5 and R6 or R5' and R6' together form oxo, and salts thereof, processes for the preparation of the said compounds, pharma-ceudcal compositions comprising them and the use thereof as medicinal active ingre-dients.
Patent CA-2091881-A1 (CA)
Title: Method and an apparatus for taking and analysing level determined samples for pore gas/liquid from a subterranean formation
Inventor: SORENSEN KURT I
IPC: E21B49/08
Filed: 1991-09-18
Abstract: A method and an apparatus serve to take and analyse level determined samples of pore gaz/liquid, e.g. water from a subterranean formation, in which a borehole is drilled and pore gas/liquid samples are conveyed at a desired depth into a cavity in the drill string (1). The samples are analysed in two steps, where they are first analysed in a sample chamber (18) which is detachably mounted in the drill string during drilling, and which contains a plurality of probes for in situ analysis of the samples and transmission of the analysis results to the surface of the ground where they are recorded. The samples themselves are then pumped up to the surface of the ground by means of a pump assembly (20). The samples are now analysed at the surface of the ground for further components, e.g. organic and toxic substances, just as the in situ analyses in the sample chamber are repeated at the surface of the ground. These analysis results are corrected by comparison between corresponding samples in the sample chamber and on the surface of the ground.
Patent CA-2096941-A1 (CA)
Inventor: HENNEUSE HENRY
IPC: E21B47/12
Filed: 1992-07-24
Abstract: 2096941 9306339 PCTABS00162 Dispositif de traitement et d'interprétation de données de forage (28) destiné à être monté à l'extrémité inférieure d'un train de tiges (14) disposé dans un puits de forage, le train de tiges (14) étant muni d'un outil de forage (16), d'un ensemble de mesure (36) et de moyens (30) de transmission des données du fond vers la surface. Selon l'invention, le dispositif est adapté pour envoyer à la surface uniquement des messages abrégés après interprétation des mesures prises par l'ensemble de mesure (36). Un procédé permettant la mise en oeuvre de ce dispositif est également décrit.
Patent CA-2100024-A1 (CA)
Inventor: MORIOKA KOITSU
IPC: A44B19/46
Filed: 1993-07-07
Abstract: ABSTRACT OF THE DISCLOSURE       As it is intermittently supplied, a blank wire having a generally Y-shape cross section is cut into slices of a predetermined thickness by a cutting punch, which is fixed to the frame, and a coacting cutting die, which is reciprocatingly movable in the cutting direction. Then a bulge is formed on the head portion of the cut coupling element by a bulge forming die, which is connected with the forward end in stroke direction of the cutting die, and a coacting bulge forming punch, which is movable upwardly and down-wardly. The cutting punch is equipped with preventing means on the upper side of the end of a blade for preventing the cut coupling element from jumping up from the blade, so that a bulge can be formed on the head portion reliably, without giving any damage to peripheral equipments.
Patent CA-2101499-A1 (CA)
Title: Input protection circuit for power converter
Inventor: RENE RAYMOND
IPC: H02H9/00
Filed: 1993-07-28
Abstract: INPUT PROTECTION CIRCUIT FOR POWER CONVERTER Abstract An input circuit for a power converter that is powered over a long copper supply line having a variable length up to 10 km includes a multipurpose protection circuit for protection against line and converter faults and in addition provides lightning protection.